Phosphates of heavy metals

Phosphates of heavy metals · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC01B25/37
Official titlePhosphates of heavy metals
Display labelPhosphates of heavy metals
Total patents107

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201512
201612
20179
20186
20195
20209
20219
202214
202310
202412
20257
20262

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C01B25/37?
CPC C01B25/37 is the Cooperative Patent Classification code for “Phosphates of heavy metals.”
How many patents are filed under CPC C01B25/37 (Phosphates of heavy metals)?
Our database includes 107 publications tagged with this CPC code.
Is patent activity under CPC C01B25/37 growing?
Publication counts under this code: 12 in 2024 vs 7 in 2025 (latest complete years).